Wire-rod mill



(No Model.)

T. W. FITCH.

WIRE ROD MILL.

No. 435,811.. Patented Sept. 2, 1890'.

MNHN

WITNESSES,

UNTTED STATES PATENT OFFICE.

THOMAS W. FITCH, 0F PITTSBURG, PENNSYLVANIA.

WIRE-ROD MILL.

SPECIFICATION forming part of Letters Patent No. 435,811, dated September 2, 1890.

Application flied June 27, 1890.

.To all whoml it may concern:

Be it known that I, THOMAS YV. FITCH, of Pittsburg', in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in fire-Rod Mills, of which the following is a full, clear, and eX- act description.

My invention has for its object to provide an improved plant or system of rolls for wirerod mills, adapted to afford a mill compact and convenient in arrangement. capable of being operated with comparatively little labor and of producing an increased output.

It consists in combining with the so-called rod-train and billet-train, which may be of usual construction and arrangement, rollpasses, through which the rod travels in three continuous passes, and one loop from the billet-train to the rst pass of the rod-train.

It is illustrated in the accompanying drawing, which shows the mill in plan View. This drawing does not illustrate the details of construction ef the rolls or of their housings and driving-gear, since these are so familiar lo those skilled in the art that minute description and illustration of them would not serve to make the specification more intelligible.

In the drawing, 2 2 are the usual bloomheating furnaces. 3 4 are the rolls of the billet-mill, of which the rolls 3 form a threehigh train, through which the bloom is passed several times, as indicated in the drawing by the dotted line, which represents the continnous course of the metal through the mill. After passing through the rolls 4 the rod goes in a direct course through a train of rolls 5 and 6, having two passes, between which the rod travels in a loop c, and thence in a direct line and in a reverse direction through rolls 7 to the rolls of the rod-trains, which consist of sets of rolls 8 and 9, through which the rod passes in loops back and forth, as in the well-known Belgian mill. The rod thus travels in three continuous passes d, e, and f, and one loop c between the billet-train and the Serial No. 356,966. (No model.)

first pass of the rod-train. From the last set of the rod-train the rod may be delivered to the reel, where it is coiled and bundled. The passes of the roll are preferably shaped so that the cross-section of the rod shall be changed alternately from square to oval, and suitable guide-troughs and repeaters are used to guide and deliver the rod to the rolls in the usual manner.

10 11 12 are engines for driving the rolls. The engine 10 may be employed to drive the billet-train and the rolls 4 5 G, the engine 1l to drive the rolls 7 and 8, and the engine 12 to drive the rolls 9, and the diameters of the rolls and their driving mechanism are such that the rolls or sets of rolls shall travel at successively greater rates of speed to compensate the reduction and elongation of the rod as it passes through the mill.

The advantages of my invention will be appreciated by those skilled in the art. The mill has been put into practical use by me and has been demonstrated to be convenient and economical in its construction and arrangement and well adapted to produce a large output. It will be understood that in its use several rods may be caused to pass through the rolls at the same time, and the mill will be found to be suited to be used in such manner with safety to the workmen and with a minimum of necessary labor.

I claim- In a rod-mill, the combination, with the billet-train and rod-train, of roll-passes 5, 6, and 7, through which the rod travels in three continuous passes, and one loop from the billettrain to the first pass of the rod-train, substantially as and for the purposes described.

I testimony whereof I have hereunto set my hand this 26th day of June, A. D. 1890.

THOMAS W. FITCH. Witnesses:

W. B. CORWIN, H. M. CoRwIN, 

